Home / 6,660.30-9,987.25-3,147.37

Finding the Fourth Proportional to 6,660.30, 9,987.25 and 3,147.37

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Solution

The fourth proportional to 6,660.30, 9,987.25 and 3,147.37 is: 4,719.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,660.30 : 9,987.25 = 3,147.37 : x
  2. Step 2: Convert to fraction form
    6,660.30/9,987.25 = 3,147.37/x
  3. Step 3: Cross multiply
    6,660.30x = 9,987.25 × 3,147.37
  4. Step 4: Simplify right side
    6,660.30x = 31,433,571.03
  5. Step 5: Solve for x
    x = 31,433,571.03/6,660.30
  6. Step 6: Final answer
    x = 4,719.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.